. >> we heard from newt gingrich who has some experience standing on stage opposite mitt romney. he says one of the new challenges is to basically stand next to the president, indict his as he described them failed policy but doing them in a firm, respectful way. aids to both mitt romney and the president really try to get under their skin. it's moments like that that can get under the president's skin. >> that debate prep is tough because they have to challenge them with their weaknesses, that can't be fun but necessary. >>> well, just moments ago, the president left the white house en route to nevada for a campaign revent and a few days of debate preparations. >> governor romney, they have said that he's practiced zingers and lines for moves and months and months. >> i think the president's view is he's not worried about zingers and lines, he's got time with the american people to explain to them his case for re-election, about what he wants to do on the economy. >> it's interesting, you just played the tape of the president striding across the south lawn, he got on marine 1. h